import unittest

class TestLogin(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        print('1. 打开浏览器')

    @classmethod
    def tearDownClass(cls):
        print('5. 关闭浏览器')

    def setUp(self):
        print('2. 打开网页')
    def tearDown(self):
        print('4. 关闭网页')

    def test1(self):
        print('3. 输入用户名、密码，点击登录')
    def test2(self):
        print('3. 输入用户名、密码，点击登录')
    def test3(self):
        print('3. 输入用户名、密码，点击登录')